1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddb50c1036bf7af3f6de038ec2fde6052cf363cf5b6bf5c58feea1c804edb04. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad32e344-840c-4aa0-bd35-af65df477702.json and https://artists.proofprofile.net/proofs/artist/ad32e344-840c-4aa0-bd35-af65df477702.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dea28d2341996d4c87c001038d587def3d90290932652c412a500ec9c4fa86. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2012120668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabd5917d29eb5407efece12d01899f553fd2b653c4b879aa9feadd7accec29d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2012120670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e15a129e4d6734cecbe87f8d6f5624c81bca53a5dd8d2cb5d9ad85319e02303. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507967168b529dedb6752d4781ea41de65ae58010e337232da8698a4866fec7d. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1770ffad5d1756acae6cc5e9c367d1ad26400ac34880f99d2c346504575e730. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c635fa81ed8aaeaec5bd4032893eaefaa94c593fcb757f481aaa5e84f102606. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab37c847561621fe3e8dc60bf3c176fec7cb8dd8e9c892576d78b9e3eef937d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc9b9dd5d34a4bf4351bd6df8cac7a4bf665ac2f1a9401d1e48c305f5a132b8. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3354b31e7a18731ff354f6f33a05b0ca4d9b555f0fd237ab68d720cf6e0e030. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96fd7667f3b73093e1b435577b5064d31e29489c827e6b43c5a8da907ecc65d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7407954979b00908b1542d3db596fd826e150276ebd67d8df1744617b941e8f2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:38:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011316625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c7eef2b1b2c01d1d209c2d976beac0e7d23315626003da68c7e11446777c1f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011819260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cefbe4bca523ab4f00f848baf6ad5f4f63bb30eb3515c79f2abf6936d52bc1. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:39:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011819263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68c339780081a21f89b82b745b76b781f007d522a636defe448203210958422. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011819265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473faa5142410795b096f5dfd0b2bdaa3c268d5e9532c462fed96cbe70a541f0. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2011819266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192a5694d101f346e5107b274edc3c83c05516c06a5824727c31480ec400fb69. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2012221212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f607e1866a8389b90c6e27f4e2890d7d512d7d94c456a05fbbacbe8acb7d8b8. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2012221214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6ce0de2294c4aab18ca41451e3e3555d74c2279ca19c83f1a9366401fd1287. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH2012221218.